2003 — 2007
4.2L Supercharged V8 - XJR Performance
Petrol
Gently accelerate and decelerate at low speeds to feel for any 'clunking' from the rear; the suspension bushes on the X350 are known to wear over time and may eventually require replacement.
Cycling through the air suspension height settings if applicable, listening for any unusual compressor noise and ensuring the car levels out evenly on flat ground.
Monitor the 6-speed ZF transmission for smooth gear changes; if you notice any 'flare' or hesitation, it is worth considering a professional gearbox service as part of your future planning.
Look closely at the sills and wheel arches for any signs of surface corrosion, as these aluminium-bodied Jaguars still require a watchful eye to maintain their condition.
Usually the time to inspect the cooling system, including plastic thermostat housings which can become brittle.
A common interval for considering a full transmission fluid and filter flush to keep the ZF unit shifting smoothly.
Typically the point where suspension components like ball joints and control arm bushings may start to show their age.
Verify the service history specifically looking for regular oil changes with high-quality synthetic lubricants.
Check the condition of the supercharger belt and listen for any bearing rattle at idle.
Inspect the electrical system for signs of low battery voltage, as these cars are quite sensitive to stable power levels.
Ensure the air conditioning system is blowing cold, as a well-maintained climate unit is essential for a comfortable ride.
Check that all interior electronics, including the infotainment and seat adjustments, are functioning as expected.
Estimated repair costs if issues arise
In cars of this age, the air bellows can eventually develop leaks. You might eventually need to budget for the replacement of these units to maintain that signature Jaguar ride quality.
If the supercharger begins to whine excessively, it may be time for a nose-cone service or coupler replacement to keep the performance sharp.
To ensure long-term reliability, it's wise to consider a transmission oil and filter change. This helps keep the shifting crisp and protects the internals.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer